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The image displays a white, rectangular informational sign affixed to an orange-brown, textured wall in Sentmenat, Spain. No individuals are present. The sign, weathered and showing minor smudges, features a "FANTASTIC FACTORY" logo in the upper left corner, depicting a blacksmith at an anvil. It presents two primary metallurgical diagrams. The left diagram, titled "DIAGRAMA FASES HIERRO-CARBONO" (Iron-Carbon Phase Diagram), plots temperature (°C) against carbon percentage (C%). Key phases and compositions such as "Líquido (L)", "Austenita (γ)", "Perlita + Ferrita (α)", and "Perlita + Cementita (Fe₃C)" are delineated, with specific temperatures of 1147 °C and 723 °C marked. The base indicates "ACERO" (Steel) and "FUND. HIERRO" (Cast Iron) ranges. The right diagram, titled "TRATAMIENTOS TÉRMICOS DEL ACERO" (Heat Treatments of Steel), illustrates various thermal processes by plotting temperature (°C) over an unlabeled x-axis likely representing time. Curves depict "CALENTAMIENTO" (Heating), "AUSTENIZACIÓN" (Austenization), "ENFRIAMIENTO" (Cooling), and specific treatments like "RECOCIDO" (Annealing), "TEMPLE" (Quenching), "NORMALIZADO" (Normalizing), and "REVENIDO" (Tempering). A distinct diagonal shadow from direct sunlight crosses the lower right portion of the sign and extends onto the textured wall below.
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